<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>表格学习</title>
</head>
<body>

<!--  表格table
行： tr   row
列： td   col
跨列 ,  跨行 =  colspan , rowspan
-->


<table border="1px">
  <tr>
    <!-- colspan 跨列-->
    <td colspan="4">1-1</td>

  </tr>
  <tr>
    <!-- rowspan 跨行-->
    <td rowspan="2">2-1</td>
    <td>2-2</td>
    <td>2-3</td>
    <td>2-4</td>
  </tr>
  <tr>
    <td>3-1</td>
    <td>3-2</td>
    <td>3-3</td>

  </tr>

</table>


</body>
</html>
